fix(server): empty streamed Claude text keeps the result fallback

A streamed text block that delivered no text no longer counts as streamed,
so an empty snapshot does not suppress the result text.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
46255debffJulius Marminge committed on 10/24/2026, 11:34:02 AMparentdcb52e6
1 file changedLine totals unavailable